Fast-growing broiler breeds dominate commercial chicken production but suffer serious health problems. Slower-growing breeds offer substantially better welfare at modest production cost.
The welfare impacts of broiler breed selection are profound. Fast-growing commercial broilers have been selected for rapid muscle accumulation, but their skeletal, cardiovascular, and immune systems cannot keep pace with this growth. The result is endemic lameness, heart conditions, and respiratory problems in birds that may spend much of their lives in chronic pain or physiological distress. Slower-growing breeds with better body proportions show dramatically improved welfare outcomes. Major food companies and retailers adopting Better Chicken Commitment standards are requiring shift to welfare-friendly breeds, and early adopters show this transition is economically feasible.